src/gallium/drivers/llvmpipe/lp_state_rasterizer.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
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   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
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   9  * without limitation the rights to use, copy, modify, merge, publish,
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  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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  26  **************************************************************************/
  27
  28 #include "pipe/p_defines.h"
  29 #include "util/u_memory.h"
  30 #include "lp_context.h"
  31 #include "lp_state.h"
  32 #include "lp_setup.h"
  33 #include "draw/draw_context.h"
  34
  35
  36
  37 void *
  38 llvmpipe_create_rasterizer_state(struct pipe_context *pipe,
  39                                  const struct pipe_rasterizer_state *rast)
  40 {
  41    /* We do nothing special with rasterizer state.
  42     * The CSO handle is just a pointer to a pipe_rasterizer_state object.
  43     */
  44    return mem_dup(rast, sizeof(*rast));
  45 }
  46
  47
  48
  49 void
  50 llvmpipe_bind_rasterizer_state(struct pipe_context *pipe, void *handle)
  51 {
  52    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  53    const struct pipe_rasterizer_state *rasterizer =
  54       (const struct pipe_rasterizer_state *) handle;
  55
  56    if (llvmpipe->rasterizer == rasterizer)
  57       return;
  58
  59    /* pass-through to draw module */
  60    draw_set_rasterizer_state(llvmpipe->draw, rasterizer, handle);
  61
  62    llvmpipe->rasterizer = rasterizer;
  63
  64    /* Note: we can immediately set the triangle state here and
  65     * not worry about binning because we handle culling during
  66     * triangle setup, not when rasterizing the bins.
  67     */
  68    if (llvmpipe->rasterizer) {
  69       lp_setup_set_triangle_state( llvmpipe->setup,
  70                    llvmpipe->rasterizer->cull_mode,
  71                    llvmpipe->rasterizer->front_winding == PIPE_WINDING_CCW,
  72                    llvmpipe->rasterizer->scissor,
  73                    llvmpipe->rasterizer->gl_rasterization_rules);
  74    }
  75
  76    llvmpipe->dirty |= LP_NEW_RASTERIZER;
  77 }
  78
  79
  80 void llvmpipe_delete_rasterizer_state(struct pipe_context *pipe,
  81                                       void *rasterizer)
  82 {
  83    FREE( rasterizer );
  84 }
  85
  86